MODF(3) | Library Functions Manual | MODF(3)

# NAME

modf — extract signed integral and fractional values from floating-point number

# LIBRARY

Math Library (libm, -lm)

# SYNOPSIS

#include <math.h>

double
modf(double value, double *iptr);

float
modff(float value, float *iptr);

# DESCRIPTION

The modf() function breaks the argument value into integral and fractional parts, each of which has the same sign as the argument. It stores the integral part as a double in the object pointed to by iptr.

# RETURN VALUES

The modf() function returns the signed fractional part of value.

# SEE ALSO

frexp(3), ldexp(3), math(3)

# STANDARDS

The modf() function conforms to ANSI X3.159-1989 (“ANSI C89”).

March 21, 2006 | NetBSD 7.2